package org.jeecg.common.util;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.jeecg.common.handler.IFillRuleHandler;

/**
 * 规则值自动生成工具类
 *
 * @author qinfeng @举例： 自动生成订单号；自动生成当前日期
 */
@Slf4j
public class FillRuleUtil {

  /**
   * @param ruleCode ruleCode
   * @return
   */
  @SuppressWarnings("unchecked")
  public static Object executeRule(String ruleCode, JSONObject formData) {
    if (!StringUtils.isEmpty(ruleCode)) {
      try {
        // 获取 Service
        ServiceImpl impl = (ServiceImpl) SpringContextUtils.getBean("sysFillRuleServiceImpl");
        // 根据 ruleCode 查询出实体
        QueryWrapper queryWrapper = new QueryWrapper();
        queryWrapper.eq("rule_code", ruleCode);
        JSONObject entity = JSON.parseObject(JSON.toJSONString(impl.getOne(queryWrapper)));
        if (entity == null) {
          log.warn("填值规则：" + ruleCode + " 不存在");
          return null;
        }
        // 获取必要的参数
        String ruleClass = entity.getString("ruleClass");
        JSONObject params = entity.getJSONObject("ruleParams");
        if (params == null) {
          params = new JSONObject();
        }
        if (formData == null) {
          formData = new JSONObject();
        }
        // 通过反射执行配置的类里的方法
        IFillRuleHandler ruleHandler = (IFillRuleHandler) Class.forName(ruleClass).newInstance();
        return ruleHandler.execute(params, formData);
      } catch (Exception e) {
        e.printStackTrace();
      }
    }
    return null;
  }
}
